The jaws on this vise open a generous 6-Inch. Wide opening jaws open to 6-Inch (152.4mm) and close to zero Ribbed, neoprene jaw pads are 1.875 (47.6mm) high x 1.5 (38.1mm) wide and provide a sure grip to hold and insulate PC boards and other larger objects; reverse the pads and the wide V holds delicate cylindrical objects Base accepts all 300 series Heads and any 5/8 (15.9mm) diameter shaft Base features 4.3125 (109.5mm) bolt circle countersunk for three 1/4 (6.3mm) flathead screws (not included). Height: 7.3125 (185.7mm), Weight: 3.0 lbs. (1.4kg) Limited Lifetime Warranty! The Wide Opening PanaVise is a work-holding tool bundle designed for holding larger, heavier objects. The tool features a head that opens up to 6", removable neoprene jaw pads and the PanaVise standard base. The standard base is compatible with additional vise head options, base mounts and features the PanaVise "split-ball" design. This "split-ball" utilizes a single-knob control for head movement through three separate planes (tilt, turn and rotate). The General Purpose Work-Holding Tool The Wide Opening PanaVise is a work-holding tool made up of two PanaVise components: a wide opening vise head and a standard base. The vise head is 11" (279.4 mm) in length and opens up to 6" (152.4 mm) with removeable neoprene jaw pads. The body of the vise head has a black oxide coating to reduce glare from overhead work lights. The included 1-7/8" (47.625 mm) neoprene jaw pads are reversible and removable in order to fit your projects needs. One side of the pads contains multiple grooves designed for flat surfaces, while the other has a wide 'V' groove to hold round objects. The standard base is 3-3/4" (95.2 mm) tall and has a 4-5/16" (109.5 mm) footprint. To secure the entire unit to a work bench or an optional base mount, the Wide Opening PanaVise features a bolt circle at the bottom of the base, with three countersunk holes for 1/4" flat head screws. Jaws & Pads The head includes 1-7/8" (47.625 mm) neoprene jaw pads that are reversible and removable. One side of the pad contains multiple grooves designed for flat surfaces, the other side has a wide 'V' groove to hold round objects. Additional or replacement jaw pads sold separately. Jaw Adjustment Knob Single jaw control knob allows for precise, controlled and a firm hold on all objects. The single-action jaw configuration allows for fast opening and closing. The Single Knob "Split-Ball" Once an item is secured within the head, the split-ball adjustment system allows for maneuvering along three separate planes. The range of mobility allows for work to be arranged & rearranged into any position. Standard Base The base is 3-3/4" (95.25 mm) tall, with a base diameter of 4-5/16" (109.5 mm). The base allows for interchangeable heads or 5/8" shafts. The 3 pre-drilled holes allow for the addition of a base mount( sold separately). Specifications Overall height 7-5/16" (185.75 mm) Tilt 90 degrees Turn 360 degrees Rotate 360 degrees Vise opening 0"-6" (152.4 mm), 6-1/4" (158.75 mm) with jaw pads removed Head length 11" (279.81 mm) Bolt circle diameter 4.3125" (109.5 mm) Jaw pads Neoprene; removable; 1-7/8" (47.6 mm) high x 1-1/2" (38.1 mm) wide Shaft diameter 5/8" (15.9 mm) Weight 3 lbs (1.3kg)